如题所述
1.3x102简便计算
1.3x102
=1.3×100+1.3×2
=130+2.6
=132.6
1.3x102
=1.3×100+1.3×2
=130+2.6
=132.6
温馨提示:答案为网友推荐,仅供参考
第1个回答 2019-12-23
简便运算主要是通过交换律、结合律,将相关数字交换结合,凑成整数,达到速算目的。
1.3×102
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6
1.3×102
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6
第2个回答 2019-12-23
简便计算:首先观察,102可以化成100+2这样流好算了
=1.3×(100+2)乘法分配律得
=1.3×100+1.3×2
=130+2.6
=132.6
=1.3×(100+2)乘法分配律得
=1.3×100+1.3×2
=130+2.6
=132.6
第3个回答 2019-10-31
1.3×102
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6本回答被网友采纳
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6本回答被网友采纳
第4个回答 2019-12-23
1.3×102
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6
=1.3×(100+2)
=1.3×100+1.3×2
=130+2.6
=132.6